24K, 22K and 21K gold differ in purity, hardness, colour and price per gram. This guide compares them plainly so you can decide which karat suits jewellery, coins, bars or gifts.
What the Karat Numbers Mean
24K gold is pure gold, 24 parts out of 24. 22K gold is 22 parts gold and 2 parts other metals, about 91.7% pure. 21K gold is 21 parts gold, about 87.5% pure. The gold karat calculator shows the purity percentage for each karat.
24K Gold
24K gold has the highest metal value per gram and is the usual choice for bars, coins and investment gold. It is soft, so it scratches and bends more easily, which is why it is less common for everyday jewellery.
22K Gold
22K gold balances purity and strength. It is the most common choice for jewellery in South Asia and the Gulf, holds its shape better than 24K, and still carries a high resale value based on its gold content.
21K Gold
21K gold is harder and often used for jewellery in Saudi Arabia and other Gulf countries. It costs less per gram than 22K at the same spot rate because it contains less pure gold, and its designs can be more detailed and durable.
Which Should You Buy?
Choose 24K for bars and coins held for their metal value. Choose 22K for fine jewellery you also want to hold value. Choose 21K for durable everyday jewellery, especially where 21K is the local standard. In every case, compare the live price per gram for each karat on the gold price in Saudi Arabia page or your own country page, and check making charges separately.
Frequently Asked Questions
What is the difference between 24K, 22K and 21K gold?
24K is pure gold, 22K is about 91.7% pure gold, and 21K is about 87.5% pure gold. The rest is other metals that make the piece harder and more durable.
Which karat is best for jewellery?
22K is the most common choice for jewellery in South Asia and the Gulf, and 21K is common in Saudi Arabia. Both are harder than 24K, so they suit everyday wear better.
Is 24K gold worth more than 22K?
Yes, per gram, because 24K contains more pure gold. The live price per gram for 24K is higher than for 22K at the same spot rate.